Patent US3354637A successfully refreshed from Google Patents.
US3354637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic power transmission system
Assignee: Ford Motor Co
•
Filing: 1966-03-04
•
Granted: 1967-11-28
•
Expires: 1986-03-04
Abstract
No abstract record available.
Inventors
- 👤 Howard L Croswhite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:26
CPC Classifications
F; F16; F16H; F16H39/00; F16H39/04; F16H39/06; F16H39/08; F16H39/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
IN A HYDROSTATIC POWER TRANSMISSION SYSTEM ADAPTED TO DELIVER DRIVING TORQUE FROM A DRIVING MEMBER TO A DRIVEN MEMBER, A PAIR OF HYDROSTATIC FLUID DISPLACEMENT UNITS, EACH UNIT COMPRISING A ROTARY CAGE HAVING FORMED THEREIN A PLURALITY OF RADIALLY DISPOSED CYLINDRICAL OPENINGS, A SEPARATE BALL PISTON ELEMENT SITUATED IN EACH CYLINDRICAL OPENING, A CAM RACE SURROUNDING THE PISTON ELEMENTS OF EACH HYDROSTATIC UNIT, MEANS FOR DISPLACING THE CAM RACE FOR THE FIRST OF SAID HYDROSTATIC UNITS TO PROVIDE A CONTROLLED DEGREE FO ECCENTRICITY BETWEEN IT AND THE AXIS OF ROTATION OF THE ASSOCIATED CAGE, A TRANSMISSION HOUSING SURROUNDING SAID UNITS, THE CAM RACE FOR SAID FIRST HYDROSTATIC UNIT BEING ANCHORED TO SAID HOUSING, THE CAM RACE FOR THE OTHER HYDROSTATIC UNIT AND THE CAGE FOR SAID FIRST HYDROSTATIC UNIT BEING CONNECTED DRIVABLY TO SAID DRIVING MEMBER, THE CAGE FOR SAID OTHER HYDROSTATIC UNIT BEING CONNECTED TO SAID DRIVEN MEMBER, A TRANSVERSE WALL CONNECTED TO SAID TRANSMISSION HOUSING AND EXTENDED BETWEEN SAID UNITS, THE CAGE FOR SAID FIRST UNIT BEING JOURNALED ON SAID TRANSVERSE WALL, AND PRESSURE DISTRIBUTION PASSAGE STRUCTURE FOR DELIVERING FLUID FROM ONE UNIT TO THE OTHER INCLUDING A PLURALITY OF RADIAL PORTS FORMED IN EACH CAGE,
Claim 2
Dependent Claim
198 words
IN A HYDROSTATIC POWER TRANSMISSION SYSTEM ADAPTED TO DELIVER DRIVING TORQUE FROM A DRIVING MEMBER TO A DRIVEN MEMBER, A PAIR OF HYDROSTATIC FLUID DISPLACEMENT UNITS, EACH UNIT COMPRISING A ROTARY CAGE HAVING FORMED THEREIN A PLURALITY OF RADIALLY DISPOSED CYLINDRICAL OPENINGS, A SEPARATE BALL PISTON ELEMENT SITUATED IN EACH CYLINDRICAL OPENING, A CAM RACE SURROUNDING THE PISTON ELEMENTS OF EACH HYDROSTATIC UNIT, MEANS FOR DISPLACING THE CAM RACE FOR THE FIRST OF SAID HYDROSTATIC UNITS TO PROVIDE A CONTROLLED DEGREE FO ECCENTRICITY BETWEEN IT AND THE AXIS OF ROTATION OF THE ASSOCIATED CAGE, A TRANSMISSION HOUSING SURROUNDING SAID UNITS, THE CAM RACE FOR SAID FIRST HYDROSTATIC UNIT BEING ANCHORED TO SAID HOUSING, THE CAM RACE FOR THE OTHER HYDROSTATIC UNIT AND THE CAGE FOR SAID FIRST HYDROSTATIC UNIT BEING CONNECTED DRIVABLY TO SAID DRIVING MEMBER, THE CAGE FOR SAID OTHER HYDROSTATIC UNIT BEING CONNECTED TO SAID DRIVEN MEMBER, A TRANSVERSE WALL CONNECTED TO SAID TRANSMISSION HOUSING AND EXTENDED BETWEEN SAID UNITS, THE CAGE FOR SAID FIRST UNIT BEING JOURNALED ON SAID TRANSVERSE WALL, AND PRESSURE DISTRIBUTION PASSAGE STRUCTURE FOR DELIVERING FLUID FROM ONE UNIT TO THE OTHER INCLUDING A PLURALITY OF RADIAL PORTS FORMED IN EACH CAGE,
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |